Android Open Source - digitalcampus Information Activity

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License

The source code is released under:

MIT License

Java Source Code

package com.llenguatges.digitalcampus.subjects;
/*ww w .j a v a 2 s .co  m*/
import java.util.ArrayList;
import java.util.List;

import android.app.ActionBar;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.ListView;
import android.widget.TextView;

import com.llenguatges.digitalcampus.R;
import com.llenguatges.digitalcampus.adapters.SubjectStudentsAdapter;
import com.llenguatges.digitalcampus.adapters.SyllabusAdapter;
import com.llenguatges.digitalcampus.database.ExamTable;
import com.llenguatges.digitalcampus.database.StudentSubjectTable;
import com.llenguatges.digitalcampus.database.StudentTable;
import com.llenguatges.digitalcampus.database.SubjectMatterTable;
import com.llenguatges.digitalcampus.database.SubjectTable;
import com.llenguatges.digitalcampus.objects.Student;
import com.llenguatges.digitalcampus.objects.Subject;
import com.llenguatges.digitalcampus.objects.SubjectMatter;

public class InformationActivity extends Activity {
  
  private Subject subject;
  private List<Student> studentList;
  private List<Long> studentIdList;
  private List<SubjectMatter> syllabusArray;
  private StudentTable st;
  private StudentSubjectTable sst;
  private Long id;
  private SubjectStudentsAdapter adapter;
  private SyllabusAdapter syllabusAdapter;
  private ListView listView;
  private ListView syllabusListView;
  
  /**
   * Called when the activity is first created. 
   * This is where you all of static set up: customize ActionBar. 
   * This method also provides you with a Bundle containing the 
   * activity's previously frozen state, if there was one.
   */
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    Bundle extras = getIntent().getExtras();
    setContentView(R.layout.activity_subjects_info);
    id = extras.getLong("subject");
    ActionBar acBar = getActionBar();
    acBar.setSubtitle("Subject basic information");
    acBar.setDisplayHomeAsUpEnabled(true);
    SubjectTable st = new SubjectTable(getApplicationContext());
    subject = new Subject();
    subject = st.GetSubjectById(id);
    setInfo();
    setSyllabus();
    setStudents();
  }

  /**
   * Set subject's information text views
   */
  private void setInfo() {
    TextView tv = (TextView) findViewById(R.id.subjectName);
    tv.setText(subject.name);
    tv = (TextView) findViewById(R.id.subjectDescription);
    tv.setText(subject.description);
  }
  
  /**
   * Set subject's name text view
   * @param name
   */
  public void setSubjectName(String name) {
    TextView subjectName = (TextView)findViewById(R.id.subjectName);
    subjectName.setText(name);
  }
  
  /**
   * Set subject's description text view
   * @param description
   */
  public void setSubjectDescription(String description) {
    TextView subjectDescription = (TextView)findViewById(R.id.subjectDescription);
    subjectDescription.setText(description);
  }
  
  /**
   * Set subject's syllabus list view
   */
  public void setSyllabus() {
    syllabusArray = new ArrayList<SubjectMatter>();
    SubjectMatterTable smT = new SubjectMatterTable(getApplicationContext());
    syllabusArray = smT.GetDataFromTableBySubjectId(subject.id);
    syllabusAdapter = new SyllabusAdapter(getApplicationContext(), syllabusArray);
    syllabusListView = (ListView)findViewById(R.id.subjectListView);
    syllabusListView.setAdapter(syllabusAdapter);
  }
  
  /**
   * Set subject's students list view
   */
    private void setStudents() {
      studentList = new ArrayList<Student>();
    studentIdList = new ArrayList<Long>();
    st = new StudentTable(getApplicationContext());
    sst = new StudentSubjectTable(getApplicationContext());
    studentIdList = sst.GetStudentIdFromTableBySubjectId(id);
    for(int i = 0; i < studentIdList.size(); i++){
      studentList.add(st.GetStudentById(studentIdList.get(i)));
    }
    adapter = new SubjectStudentsAdapter(getApplicationContext(), studentList);
    listView = (ListView) findViewById(R.id.studentsListView);
    listView.setAdapter(adapter);
  }
  
    /**
     * This hook is called whenever an item in your options menu is selected.
     */
    public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()) { 
      case android.R.id.home:
        finish();
        return true; 
      case R.id.menu_delete_subject:
        AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(this);
        alertDialogBuilder.setTitle("Delete");
        alertDialogBuilder.setMessage("Delete "+subject.name+"?").setCancelable(false)
          .setPositiveButton("Delete",new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog,int id) {
              SubjectTable st = new SubjectTable(getApplicationContext());
              st.DeleteById(subject.id);
              deleteSubject(subject.id);
              dialog.cancel();
              finish();
            }
          }) .setNegativeButton("Cancel",new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog,int id) {
              dialog.cancel();
            }
        });
        AlertDialog alertDialog = alertDialogBuilder.create();
        alertDialog.show();
        return true;
      default: 
        return super.onOptionsItemSelected(item); 
    } 
  }
    
    /**
     * Deletes subject's information by subject id
     * @param id
     */
    public void deleteSubject(long id){
    SubjectMatterTable subMttTable = new SubjectMatterTable(getApplicationContext());
    subMttTable.DeleteBySubjectID(id);
    StudentSubjectTable stSbTable = new StudentSubjectTable(getApplicationContext());
    stSbTable.DeleteBySubjectID(id);
    ExamTable examTable = new ExamTable(getApplicationContext());
    examTable.DeleteBySubjectId(id);
  }
    
    /**
   * Initialize the contents of the Activity's standard options menu.
   */
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.subject_info_menu, menu);
        return true;
    }
    
    
    
}

Java Source Code List

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